WO2013183148A1 - 太陽電池、太陽電池モジュール、太陽電池の製造方法及び太陽電池モジュールの製造方法 - Google Patents
太陽電池、太陽電池モジュール、太陽電池の製造方法及び太陽電池モジュールの製造方法 Download PDFInfo
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- WO2013183148A1 WO2013183148A1 PCT/JP2012/064711 JP2012064711W WO2013183148A1 WO 2013183148 A1 WO2013183148 A1 WO 2013183148A1 JP 2012064711 W JP2012064711 W JP 2012064711W WO 2013183148 A1 WO2013183148 A1 WO 2013183148A1
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- solar cell
- electrode layer
- lower electrode
- finger portion
- finger
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022433—Particular geometry of the grid contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
- H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
- H01L31/0516—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module specially adapted for interconnection of back-contact solar cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/547—Monocrystalline silicon PV cells
Definitions
- the present invention relates to a solar cell, a solar cell module, a method for manufacturing a solar cell, and a method for manufacturing a solar cell module.
- both a p-side electrode and an n-side electrode are provided on the back side. For this reason, when connecting a back junction solar cell to a wiring member, it is necessary to position the solar cell and the wiring member with high positional accuracy. Therefore, the back junction solar cell has a problem that it is difficult to connect to the wiring member.
- the main object of the present invention is to provide a solar cell capable of easily connecting a wiring material.
- the solar cell according to the present invention includes a photoelectric conversion unit, a first electrode, a second electrode, a first insulating layer, and a second insulating layer.
- the first electrode has a first finger portion.
- the 1st finger part is distribute
- the first finger portion extends along one direction.
- the second electrode has a second finger portion.
- the 2nd finger part is distribute
- the second finger portion is arranged adjacent to the first finger portion in the other direction intersecting with the one direction.
- the second finger portion extends along one direction.
- the first insulating layer covers at least a part of the tip portion on one side in one direction of the first finger portion.
- the second insulating layer covers at least a part of the tip portion on the other side in one direction of the second finger portion.
- the solar cell module according to the present invention includes the solar cell and a wiring member electrically connected to the solar cell.
- the first lower electrode layer extending along one direction is formed on one main surface of the photoelectric conversion unit, and the first direction in the other direction intersecting the one direction.
- the first insulating layer is formed so as to cover at least a part of one end portion in one direction of the first lower electrode layer, and the other end portion in one direction of the second lower electrode layer
- a second insulating layer is formed so as to cover at least part of the first insulating layer.
- a first upper electrode layer is formed on the exposed portion of the first lower electrode layer from the first insulating layer, thereby including a first lower electrode layer and a first upper electrode layer.
- a first electrode having the finger portions is obtained.
- a second upper electrode layer is formed on the exposed portion of the second lower electrode layer from the second insulating layer, thereby including a second lower electrode layer and a second upper electrode layer.
- a second electrode having the finger portions is obtained.
- the first lower electrode layer extending along one direction on one main surface of the photoelectric conversion unit and in another direction intersecting with the one direction
- a second lower electrode layer is formed adjacent to the first lower electrode layer and extending along one direction.
- the first insulating layer is formed so as to cover at least a part of one end portion in one direction of the first lower electrode layer, and the other end portion in one direction of the second lower electrode layer
- a second insulating layer is formed so as to cover at least part of the first insulating layer.
- a first upper electrode layer is formed on the exposed portion of the first lower electrode layer from the first insulating layer, thereby including a first lower electrode layer and a first upper electrode layer.
- a first electrode having the finger portions is obtained.
- a second upper electrode layer is formed on the exposed portion of the second lower electrode layer from the second insulating layer, thereby including a second lower electrode layer and a second upper electrode layer.
- a second electrode having a plurality of finger portions is obtained to produce a plurality of solar cells. Using wiring materials to electrically connect multiple solar cells
- FIG. 1 is a schematic rear view of a solar cell according to an embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view taken along line II-II in FIG.
- FIG. 3 is a schematic cross-sectional view taken along line III-III in FIG.
- FIG. 4 is a schematic cross-sectional view of a solar cell module according to an embodiment of the present invention.
- FIG. 5 is a schematic plan view illustrating a connection state between the solar cell and the wiring member according to the embodiment of the present invention.
- 6 is a schematic cross-sectional view taken along line VI-VI in FIG.
- FIG. 7 is a schematic back view of a solar cell according to a modification.
- FIG. 8 is a schematic plan view showing a connection state between the solar cell and the wiring member in the modified example.
- the solar cell 20 includes a photoelectric conversion unit 25.
- the photoelectric conversion unit 25 is not particularly limited as long as it is a member that generates carriers such as electrons and holes by receiving light.
- the photoelectric conversion unit 25 is, for example, disposed on a semiconductor substrate having one conductivity type, a part of one main surface of the semiconductor, a first semiconductor layer having another conductivity type, and a semiconductor substrate.
- the first semiconductor layer on one main surface is disposed on at least a part of the portion where the first semiconductor layer is not disposed, and may have a second semiconductor layer having one conductivity type.
- the p-type surface is constituted by one surface of the first and second semiconductor layers, and the n-type surface is constituted by the other surface.
- a substantially intrinsic i-type semiconductor layer having a thickness that does not substantially contribute to power generation, for example, about ⁇ to 250 ⁇ is disposed between each of the first and second semiconductor layers and the semiconductor substrate. It may be.
- the photoelectric conversion unit 25 may be constituted by, for example, a semiconductor substrate provided with a p-type dopant diffusion region and an n-type dopant diffusion region so as to be exposed on one main surface.
- first and second electrodes 21 and 22 are disposed on the main surface 25 a of the photoelectric conversion unit 25. Specifically, one of the first and second electrodes 21 and 22 is provided on the p-type surface to form a p-side electrode that collects holes, and the other is n An n-side electrode is provided on the mold surface and collects electrons.
- the first electrode 21 has a plurality of first finger portions 21a and a first bus bar portion 21b.
- the plurality of first finger portions 21a are arranged at intervals along the y-axis direction orthogonal to the x-axis direction. Each of the plurality of first finger portions 21a extends along the x-axis direction.
- the plurality of first finger portions 21a are electrically connected to the first bus bar portion 21b.
- the first bus bar portion 21b is disposed on the x1 side of the plurality of first finger portions 21a.
- the first bus bar portion 21b extends along the y-axis direction.
- the second electrode 22 has a plurality of second finger portions 22a and a second bus bar portion 22b.
- the plurality of second finger portions 22a are arranged at intervals from each other along the y-axis direction. Each of the plurality of second finger portions 22a extends along the x-axis direction.
- the plurality of second finger portions 22a are electrically connected to the second bus bar portion 22b.
- the second bus bar portion 22b is arranged on the x2 side of the plurality of second finger portions 22a.
- the second bus bar portion 22b extends along the y-axis direction.
- the second finger portions 22a and the first finger portions 21a are provided alternately along the y-axis direction. Accordingly, the first finger portion 21a and the second finger portion 22a are adjacent to each other in the y-axis direction.
- the first finger portion 21a is disposed between the two second finger portions 22a.
- the second finger portion 22a is disposed between the two first finger portions 21a.
- the tip portion of the first finger portion 21a opposite to the first bus bar portion 21b faces the second bus bar portion 22b in the x-axis direction.
- the tip portion of the second finger portion 22a opposite to the second bus bar portion 22b faces the first bus bar portion 21b in the x-axis direction.
- each of the first and second electrodes 21 and 22 has a bus bar portion.
- the first and second electrodes do not have a bus bar portion. May be.
- the first and second electrodes 21 and 22 can be made of an appropriate conductive material.
- the 1st and 2nd electrodes 21 and 22 can be comprised with at least 1 type of metals, such as silver, aluminum, copper, tin, for example.
- the first and second electrodes 21 and 22 are each composed of a laminate of a plurality of conductive layers. Specifically, as shown in FIGS. 2 and 3, the first electrode 21 has a first lower electrode layer 21A and a first upper electrode layer 21B.
- the second electrode 22 includes a second lower electrode layer 22A and a second upper electrode layer 22B.
- first and second lower electrode layers 21A and 22A are layers formed by, for example, a CVD (Chemical Vapor Deposition) method or a sputtering method.
- the first upper electrode layer 21B is disposed on the first lower electrode layer 21A.
- the first upper electrode layer 21B is formed by a plating method using the first lower electrode layer 21A as a seed electrode.
- the first upper electrode layer 21B is disposed on substantially the entire portion of the first lower electrode layer 21A excluding the tip portion on the x2 side of the portion constituting the first finger portion 21a. Has been. For this reason, the tip portion on the x2 side of the first finger portion 21a is smaller than the other portion of the first finger portion 21a by the thickness of the first upper electrode layer 21B.
- the second upper electrode layer 22B is disposed on the second lower electrode layer 22A.
- the second upper electrode layer 22B is formed by a plating method using the second lower electrode layer 22A as a seed electrode.
- the second upper electrode layer 22B is disposed on substantially the entire portion of the second lower electrode layer 22A excluding the tip portion on the x1 side of the portion constituting the second finger portion 22a. Has been. For this reason, the tip portion on the x1 side of the second finger portion 22a is smaller than the other portion of the second finger portion 22a by the thickness of the second upper electrode layer 22B.
- the first lower electrode layer 21A and the second lower electrode layer 22A have substantially the same thickness. Accordingly, the tip end portion on the x2 side in the x-axis direction of the first finger portion 21a is smaller than the tip portion on the x2 side in the x-axis direction of the second finger portion 22a. The tip portion on the x1 side in the x-axis direction of the second finger portion 22a is smaller than the tip portion on the x1 side in the x-axis direction of the first finger portion 21a.
- At least a part of the tip portion on the x2 side in the x-axis direction of the first finger portion 21a is covered with the first insulating layer 23.
- the first insulating layer 23 covers substantially the entire tip portion on the x2 side in the x-axis direction of the first finger portion 21a.
- the portion of the first finger portion 21a covered with the first insulating layer 23 is only the first lower electrode layer 21A of the first lower electrode layer 21A and the first upper electrode layer 21B. It is comprised by.
- the first insulating layer 23 has a total thickness of the tip portion on the x2 side in the x-axis direction of the first finger portion 21a and the first insulating layer 23 disposed on the tip portion of the second finger portion 22a. It is provided so as to be smaller than the thickness of the tip portion on the x2 side in the x-axis direction.
- the total thickness of the tip portion on the x2 side in the x-axis direction of the first finger portion 21a and the first insulating layer 23 disposed thereon is the tip on the x2 side in the x-axis direction of the second finger portion 22a.
- the thickness is preferably equal to or less than the thickness of the part, more preferably 0.9 times or less.
- the second insulating layer 24 covers substantially the entire tip portion on the x1 side in the x-axis direction of the second finger portion 22a.
- the portion of the second finger portion 22a covered by the second insulating layer 24 is only the second lower electrode layer 22A of the second lower electrode layer 22A and the second upper electrode layer 22B. It is comprised by.
- the second insulating layer 24 has a total thickness of the tip end portion on the x1 side in the x-axis direction of the second finger portion 22a and the second insulating layer 24 disposed on the tip portion of the first finger portion 21a. It is provided so as to be smaller than the thickness of the tip portion on the x1 side in the x-axis direction.
- the total thickness of the tip portion on the x1 side in the x-axis direction of the second finger portion 22a and the second insulating layer 24 disposed thereon is the tip on the x1 side in the x-axis direction of the first finger portion 21a.
- the thickness is preferably equal to or less than the thickness of the part, more preferably 0.9 times or less.
- the first and second insulating layers 23 and 24 can be made of an appropriate insulating material.
- the 1st and 2nd insulating layers 23 and 24 can be comprised by insulating resin, an inorganic oxide, etc., for example.
- Specific examples of the resin preferably used as the constituent material of the first and second insulating layers 23 and 24 include, for example, an epoxy resin, an acrylic resin, a silicone resin, an olefin resin, and ethylene vinyl acetate.
- Specific examples of the inorganic oxide preferably used as the constituent material of the first and second insulating layers 23 and 24 include, for example, Al 2 O 3 , SiN, SiO 2 and the like.
- the solar cell module 1 shown in FIG. 4 includes the solar cell 20 described above. Specifically, the solar cell module 1 includes a plurality of solar cells 20. The plurality of solar cells 20 are arranged in the filler layer 13 filled between the light receiving surface side protection member 11 and the back surface side protection member 12.
- the light-receiving surface side protection member 11 and the back surface side protection member 12 can be comprised by a glass plate, a resin plate, a resin sheet etc., for example.
- the filler layer 13 can be composed of, for example, a crosslinkable resin such as ethylene / vinyl acetate copolymer (EVA) or a non-crosslinkable resin such as polyolefin.
- a plurality of solar cells 20 included in the solar cell module 1 are electrically connected by a wiring member 30.
- the wiring member 30 includes a wiring member body 31 and a conductive layer 32.
- the wiring material main body 31 has a substantially rectangular shape.
- the wiring material body 31 is made of an insulating material.
- the wiring material body 31 can be made of resin, for example.
- the conductive layer 32 is disposed on the surface of the wiring material body 31 on the solar cell 20 side.
- the wiring material body 31 electrically connects one first electrode 21 and the other second electrode 22 of two solar cells 20 adjacent in the x direction.
- the conductive layer 32 includes a plurality of first connection portions 32a, a plurality of second connection portions 32b, and a conductive layer body 32c. Each of the plurality of first connection portions 32a and each of the plurality of second connection portions 32b are electrically connected to the conductive layer body 32c.
- the plurality of first connection portions 32a respectively extend from the conductive layer main body 32c along the x-axis direction.
- the plurality of first connection portions 32a are arranged at intervals from each other along the y-axis direction.
- Each of the plurality of first connection portions 32a reaches the second finger portion 22a.
- Each of the plurality of first connection portions 32a is electrically connected to the second bus bar portion 22b and is also electrically connected to the end portion of the second finger portion 22a on the second bus bar portion 22b side. Has been.
- the plurality of second connection portions 32b each extend from the conductive layer main body 32c along the x-axis direction.
- the plurality of second connection portions 32b are arranged at intervals from each other along the y-axis direction.
- Each of the plurality of second connection portions 32b reaches the first finger portion 21a.
- Each of the plurality of second connection portions 32b is electrically connected to the first bus bar portion 21b, and is also electrically connected to the end portion of the first finger portion 21a on the first bus bar portion 21b side. Has been.
- the resin adhesive layer 40 may be constituted only by a cured product of the resin adhesive, but in the present embodiment, includes a cured product 41 of the resin adhesive and a conductive material 42.
- the conductive layer 32 and the solar cell 20 are electrically connected via the conductive material 42.
- the conductive material 42 can be composed of, for example, particles made of a conductive material, insulating particles coated with a conductive layer, or the like.
- the tip portion on the x2 side of the first finger portion 21a is covered with the first insulating layer 23.
- the part which should be electrically connected to the 2nd electrode 22 of the conductive layer 32 of the wiring material 30 is a 1st finger part. It is possible to suppress electrical connection to 21a.
- at least a part of the tip portion on the x1 side of the second finger portion 22a is covered with the second insulating layer 24.
- the part which should be electrically connected to the 1st electrode 21 of the conductive layer 32 of the wiring material 30 is a 2nd finger part. It is possible to suppress electrical connection to 22a. Therefore, the solar cell 20 and the wiring member 30 can be easily connected.
- the maximum particle diameter of the conductive material 42 is smaller than the thickness of the first and second insulating layers 23 and 24. Is preferred.
- the maximum particle diameter of the conductive material 42 is preferably less than 1 times the thickness of the first and second insulating layers 23 and 24, and more preferably 2/3 times or less.
- the first insulating layer 23 is provided so as to reach the x1 side in the x direction from the conductive layer 32, and the second insulating layer 24 is provided in the x direction from the conductive layer 32.
- the first insulating layer 23 is provided so as to reach the x1 side in the x direction from the conductive layer 32
- the second insulating layer 24 is provided in the x direction from the conductive layer 32.
- the total thickness of the tip portion on the x2 side of the first finger portion 21a and the first insulating layer 23 is made smaller than the thickness of the tip portion on the x2 side of the second finger portion 22a, so that the second finger
- the total thickness of the tip portion on the x1 side of the portion 22a and the second insulating layer 24 is made smaller than the thickness of the tip portion on the x1 side of the first finger portion 21a.
- the first insulating layer 23 covers substantially the entire tip portion of the first finger portion 21a
- the second insulating layer 24 covers the tip portion of the second finger portion 22a.
- the example which substantially covered the whole was demonstrated.
- the present invention is not limited to this configuration.
- the first insulating layer 23 covers, for example, only the edge part adjacent to the second finger part 22 a at the tip part on the x2 side of the first finger part 21 a.
- the second insulating layer 24 may cover, for example, only the edge part adjacent to the first finger part 21a at the tip part on the x1 side of the second finger part 22a. Even in such a case, the above-described effects are exhibited.
- the shape of the conductive layer 32 of the wiring member 30 used in the present embodiment is not limited to the shape shown in FIG.
- the conductive layer 32 may be provided in a substantially rectangular shape. That is, the 1st connection part 32a may be provided integrally, and the 2nd connection part 32b may be provided integrally.
- the solar cell 20 can be manufactured by the following manufacturing method, for example.
- the first and second lower electrode layers 21A and 22A are formed on the main surface 25a of the photoelectric conversion unit 25.
- the first and second lower electrode layers 21A and 22A can be formed by, for example, a CVD (Chemical Vapor Deposition) method, a sputtering method, or the like.
- the first and second insulating layers 23 and 24 are formed.
- the first and second insulating layers 23 and 24 can be formed by, for example, printing of a resin material or sputtering of an inorganic material.
- the first and second insulating layers 23 and 24 may also be formed on portions of the main surface 25a where the first and second lower electrode layers 21A and 22A are not provided. In this case, the first insulating layer 23 and the second insulating layer 24 may be provided integrally.
- the first and second upper electrode layers 21B and 22B are formed on the first and second lower electrode layers 21A and 22A.
- the first and second electrodes 21 and 22 can be formed.
- the first and second upper electrode layers 21B and 22B can be formed by plating, for example, by supplying power to the first and second lower electrode layers 21A and 22A.
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Abstract
Description
図1~図3に示されるように、太陽電池20は、光電変換部25を備えている。光電変換部25は、受光することによって電子や正孔などのキャリアを生成させる部材である限りにおいて特に限定されない。光電変換部25は、例えば、一の導電型を有する半導体基板と、半導体の一主面の一部の上に配されており、他の導電型を有する第1の半導体層と、半導体基板の一主面の第1の半導体層が配されていない部分の少なくとも一部の上に配されており、一の導電型を有する第2の半導体層とを有していてもよい。この場合、第1及び第2の半導体層の一方の表面によりp型表面が構成され、他方の表面によりn型表面が構成される。なお、第1及び第2の半導体層のそれぞれと半導体基板との間に、例えばÅ~250Å程度の実質的に発電に寄与しない程度の厚みの、実質的に真性なi型半導体層が配されていてもよい。
図4に示される太陽電池モジュール1は、上述の太陽電池20を備える。具体的には、太陽電池モジュール1は、複数の太陽電池20を備える。複数の太陽電池20は、受光面側保護部材11と裏面側保護部材12との間に充填された充填材層13内に配されている。受光面側保護部材11及び裏面側保護部材12は、例えば、ガラス板、樹脂板、樹脂シートなどにより構成することができる。充填材層13は、例えば、エチレン・酢酸ビニル共重合体(EVA)などの架橋性樹脂や、ポリオレフィンなどの非架橋性樹脂により構成することができる。
20…太陽電池
21…第1の電極
21A…第1の下部電極層
21B…第1の上部電極層
21a…第1のフィンガー部
21b…第1のバスバー部
22…第2の電極
22A…第2の下部電極層
22B…第2の上部電極層
22a…第2のフィンガー部
22b…第2のバスバー部
23…第1の絶縁層
24…第2の絶縁層
25…光電変換部
25a…主面
30…配線材
31…配線材本体
32…導電層
32a…第1の接続部
32b…第2の接続部
32c…導電層本体
40…樹脂接着層
Claims (13)
- 光電変換部と、
前記光電変換部の一主面上に配されており、一の方向に沿って延びる第1のフィンガー部を有する第1の電極と、
前記光電変換部の一主面上に、前記一の方向に交差する他の方向において前記第1のフィンガー部に隣接して配されており、前記一の方向に沿って延びる第2のフィンガー部を有する第2の電極と、
前記第1のフィンガー部の前記一の方向の一方側の先端部の少なくとも一部を覆う第1の絶縁層と、
前記第2のフィンガー部の前記一の方向の他方側の先端部の少なくとも一部を覆う第2の絶縁層と、
を備える、太陽電池。 - 前記第1のフィンガー部と、前記第2のフィンガー部とが前記他の方向に沿って交互に設けられている、請求項1に記載の太陽電池。
- 前記第1のフィンガー部の前記一の方向の一方側の先端部の厚みが、前記第2のフィンガー部の前記一の方向の一方側の先端部の厚みよりも小さく、
前記第2のフィンガー部の前記一の方向の他方側の先端部の厚みが、前記第1のフィンガー部の前記一の方向の他方側の先端部の厚みよりも小さい、請求項1または2に記載の太陽電池。 - 前記第1のフィンガー部の前記一の方向の一方側の先端部と前記第1の絶縁層との総厚みが、前記第2のフィンガー部の前記一の方向の一方側の先端部の厚みよりも小さく、
前記第2のフィンガー部の前記一の方向の他方側の先端部と前記第2の絶縁層との総厚みが、前記第1のフィンガー部の前記一の方向の他方側の先端部の厚みよりも小さい、請求項3に記載の太陽電池。 - 前記第1の絶縁層は、前記第1のフィンガー部の前記一の方向の一方側の先端部の前記第2のフィンガー部側の端縁部を少なくとも覆い、
前記第2の絶縁層は、前記第2のフィンガー部の前記一の方向の他方側の先端部の前記第1のフィンガー部側の端縁部を少なくとも覆う、請求項1~4のいずれか一項に記載の太陽電池。 - 請求項1~5のいずれか一項に記載の太陽電池と、
前記太陽電池に電気的に接続された配線材と、
を備える、太陽電池モジュール。 - 前記配線材は、
絶縁材料からなる配線材本体と、
前記配線材本体の上に配されており、前記第1のフィンガー部に電気的に接続された導電層と、
を有する、請求項6に記載の太陽電池モジュール。 - 前記配線材と前記太陽電池とを接着している樹脂接着層をさらに備える、請求項6または7に記載の太陽電池モジュール。
- 前記樹脂接着層は、導電材を含み、
前記導電材の最大粒子径が、前記第2の絶縁層の厚みよりも小さい、請求項8に記載の太陽電池モジュール。 - 前記第2の絶縁層が、前記導電層よりも前記一の方向の一方側にまで至っている、請求項7~9のいずれか一項に記載の太陽電池モジュール。
- 光電変換部の一主面の上に、一の方向に沿って延びる第1の下部電極層と、一の方向に対して交差する他の方向において前記第1の下部電極層と隣接し、前記一の方向に沿って延びる第2の下部電極層とを形成する工程と、
前記第1の下部電極層の前記一の方向の一方側の先端部の少なくとも一部を覆うように第1の絶縁層を形成すると共に、前記第2の下部電極層の前記一の方向の他方側の先端部の少なくとも一部を覆うように第2の絶縁層を形成する工程と、
前記第1の下部電極層の前記第1の絶縁層からの露出部の上に第1の上部電極層を形成することにより、前記第1の下部電極層と前記第1の上部電極層とを含む第1のフィンガー部を有する第1の電極を得ると共に、前記第2の下部電極層の前記第2の絶縁層からの露出部の上に第2の上部電極層を形成することにより、前記第2の下部電極層と前記第2の上部電極層とを含む第2のフィンガー部を有する第2の電極を得る工程と、
を備える、太陽電池の製造方法。 - 光電変換部の一主面の上に、一の方向に沿って延びる第1の下部電極層と、一の方向に対して交差する他の方向において前記第1の下部電極層と隣接し、前記一の方向に沿って延びる第2の下部電極層とを形成する工程と、
前記第1の下部電極層の前記一の方向の一方側の先端部の少なくとも一部を覆うように第1の絶縁層を形成すると共に、前記第2の下部電極層の前記一の方向の他方側の先端部の少なくとも一部を覆うように第2の絶縁層を形成する工程と、
前記第1の下部電極層の前記第1の絶縁層からの露出部の上に第1の上部電極層を形成することにより、前記第1の下部電極層と前記第1の上部電極層とを含む第1のフィンガー部を有する第1の電極を得ると共に、前記第2の下部電極層の前記第2の絶縁層からの露出部の上に第2の上部電極層を形成することにより、前記第2の下部電極層と前記第2の上部電極層とを含む第2のフィンガー部を有する第2の電極を得、太陽電池を複数作製する工程と、
配線材を用いて、前記複数の太陽電池を電気的に接続する工程と、
を備える、太陽電池モジュールの製造方法。 - 前記配線材は、絶縁材料からなる配線材本体と、前記配線材本体の上に配されており、前記第1のフィンガー部に電気的に接続される導電層と、を有する、請求項12に記載の太陽電池モジュールの製造方法。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011044749A (ja) * | 2010-11-30 | 2011-03-03 | Sanyo Electric Co Ltd | 太陽電池 |
JP2012074414A (ja) * | 2010-09-27 | 2012-04-12 | Sanyo Electric Co Ltd | 太陽電池モジュール及びその製造方法 |
JP2012084560A (ja) * | 2010-10-06 | 2012-04-26 | Hitachi High-Technologies Corp | 結晶系太陽電池モジュール |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5494643A (en) * | 1995-04-04 | 1996-02-27 | University Of New Mexico | Method and apparatus for optimizing control of an immobilized film photoreactor |
JP4222992B2 (ja) * | 2004-09-29 | 2009-02-12 | 三洋電機株式会社 | 光起電力装置 |
JP4948473B2 (ja) | 2008-04-21 | 2012-06-06 | 三洋電機株式会社 | 太陽電池モジュール |
JP4838827B2 (ja) * | 2008-07-02 | 2011-12-14 | シャープ株式会社 | 太陽電池モジュールおよびその製造方法 |
JP5410050B2 (ja) | 2008-08-08 | 2014-02-05 | 三洋電機株式会社 | 太陽電池モジュール |
EP2413379A4 (en) * | 2009-03-23 | 2017-05-31 | Sharp Kabushiki Kaisha | Wiring-sheet-attached solar battery cell, solar cell module, and process for manufacturing wiring-sheet-attached solar battery cell |
CN102365755A (zh) * | 2009-04-08 | 2012-02-29 | 夏普株式会社 | 布线板、带布线板的太阳能电池单元、太阳能电池模块以及带布线板的太阳能电池单元的制造方法 |
JP2011187567A (ja) * | 2010-03-05 | 2011-09-22 | Sanyo Electric Co Ltd | 太陽電池モジュール |
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012074414A (ja) * | 2010-09-27 | 2012-04-12 | Sanyo Electric Co Ltd | 太陽電池モジュール及びその製造方法 |
JP2012084560A (ja) * | 2010-10-06 | 2012-04-26 | Hitachi High-Technologies Corp | 結晶系太陽電池モジュール |
JP2011044749A (ja) * | 2010-11-30 | 2011-03-03 | Sanyo Electric Co Ltd | 太陽電池 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200086121A (ko) * | 2019-01-08 | 2020-07-16 | 엘지전자 주식회사 | 태양 전지 및 이를 포함하는 태양 전지 패널 |
JP2020113760A (ja) * | 2019-01-08 | 2020-07-27 | エルジー エレクトロニクス インコーポレイティド | 太陽電池及びこれを含む太陽電池パネル |
JP7104079B2 (ja) | 2019-01-08 | 2022-07-20 | エルジー エレクトロニクス インコーポレイティド | 太陽電池及びこれを含む太陽電池パネル |
US11575054B2 (en) | 2019-01-08 | 2023-02-07 | Shangrao Jinko Solar Technology Development Co., Ltd | Solar cell and solar cell panel including the same |
KR102622744B1 (ko) | 2019-01-08 | 2024-01-09 | 상라오 신위안 웨동 테크놀러지 디벨롭먼트 컴퍼니, 리미티드 | 태양 전지 및 이를 포함하는 태양 전지 패널 |
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